delay toast after posting (#9208)

src/view/com/composer/Composer.tsx

@@ -564,6 +564,7 @@ export const ComposePost = ({
       onPostSuccess?.(postSuccessData)
     }
     onClose()
+    setTimeout(() => {
       Toast.show(
         <Toast.Outer>
           <Toast.Icon />
@@ -589,6 +590,7 @@ export const ComposePost = ({
         </Toast.Outer>,
         {type: 'success'},
       )
+    }, 500)
   }, [
     _,
     agent,